NTA Abhyas NEET2020BotanyThe Living WorldPractice
Read these statements about a taxonomic key. How many are false? 1 . A taxonomic key is based on the contrasting characters generally in a pair called a couplet. 2 . It is generally analytical. 3 . It is a taxonomic aid used for identification of plants only. 4 . Only accepted statement in the key is called a lead.
Options
- ATwo
- BOne
- CThree
- DFour
Correct answer
A. Two
Step-by-step solution
A key in taxonomy facilitates the identification of unknown species of an organism based on contrasting characters. It provides a choice between two contradictory statements resulting in acceptance of one and the rejection of the other. A single pair of the contradictory statement is called a couplet and each statement of a couplet is termed a lead (each statement in the key is called a lead). This taxonomic aid is used for all the organisms.